--  @testpoint:添加package参数，创建重载的函数，指定参数数据类型是variadic，合理报错
 drop FUNCTION if EXISTS w_testfun1;
CREATE FUNCTION w_testfun1 (c_int VARIADIC int[] = array[1,2,3,4])  RETURNS int[]  AS $$
        BEGIN
                RETURN (c_int);
        END;
$$ LANGUAGE plpgsql
package;
/